Buy DIN EN () Electricity Metering Equipment (a.c.) – Part 1: General Requirements, Tests And Test Conditions – Metering Equipment (class. BS EN Electricity metering equipment (a.c.). General requirements, tests and test conditions. Metering equipment (class indexes. Find the most up-to-date version of CEI EN at Engineering
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For rack-mounted meters, the mechanical properties are not covered in this standard.
Information under e to l shall be marked on a name-plate preferably placed within the meter. Electromechanical meters for active energy class indexes A and B.
Testing and measurement techniques — Voltage dips, short interruptions and voltage variations immunity tests IEC For testing purposes, it shall be possible to increase the resolution to 0,01 times the principal unit.
See also Figure C. For the purpose of these tests, the term “earth” has the following meaning: The 3-layer, connection-oriented HDLC based communication profile.
BS EN 50470-1:2006
Immunity to electrostatic discharges This test is not applicable to electromechanical meters. Dr aft for vo 3. Metering equipment class indexes A, B and C. See also Figure B.
The terminal ne shall enclose the actual terminals, the conductor fixing screws and, unless otherwise specified, a suitable length of the external conductors and 504701- insulation. The other end of the voltage circuit shall be connected to earth and the impulse voltage shall be applied between the terminal of the current circuit and earth. An optimum pulse transmission 6 is achieved when, under test conditions, the receiving head is aligned with its optical axis on the optical pulse output.
EN – Electricity metering equipment (a.c.) — Part 1: General req –
Eh more about the cookies we use and how to change your settings. An influence quantity is a disturbance if for that influence quantity the rated operating conditions are not specified 3.
The drums, which indicate a decimal fraction of the unit shall be marked differently when they are visible.
The test shall be carried out according to ENunder the following conditions: Class II equipment Information under a to d may be marked on an external plate permanently attached to the meter cover. Terminals with different potentials, which are grouped close together, shall be protected against accidental short-circuiting. I max where x m Un is the critical change value een kWh units; is the number of measuring elements; is the reference voltage in volts; 7.
The insulating properties of lacquer, enamel, ordinary paper, 50470- oxide film on metal parts, adhesive film and sealing compound, or similar unsure materials, shall not be regarded as sufficient for supplementary insulation.
NOTE Meters are generally used in locations where levels of vibration and shock are of low significance. Every meter shall bear the following information as applicable: In the case of modifications to the meter made after the type test and affecting only part of the meter, it will be sufficient to een limited tests on the characteristics that may be affected by the modifications.
Click to learn more. During the test, the duration of which shall be 2 h, the meter shall be exposed neither to draught nor to direct solar radiation.
Dr The type test defined in 3. For special applications, other test levels might be necessary and should be agreed on between the user and the manufacturer. Dry heat IEC General requirements, tests and test conditions – Metering equipment class indexes A, B and C. General requirements, tests and test conditions.
Tests — Test Fc: The holes in the insulating material, which form an extension of the terminal holes, shall be of sufficient size to accommodate also the insulation of the conductors. Dr The operation indicator, if fitted, shall be visible from the front. The components shall be reliably fastened and secured against loosening. Testing and measurement techniques — Oscillatory waves immunity test IEC For requirements and testing, see 7.
The marking shall be indelible, non-transferable, distinct and legible from outside the meter. The case shall be so constructed 5047-01 arranged that any non-permanent deformation cannot prevent the satisfactory operation of the meter.
Dr The terminal block shall be so constructed that the meter during any deformation caused by rated operating conditions shall comply with the insulation requirements and the clearance and creepage distances within this standard. Customers who bought this product also bought BS EN Resistance to heat and fire The terminal block, the terminal cover and the meter case shall ensure reasonable safety against spread of fire.
The clearance between the terminal cover, if made of metal, and the upper surface of the screws when screwed down to the maximum applicable conductor fitted shall be not less than the relevant values indicated in Table 4 and Table 5.